Please could someone tell me the best place to buy lens panels for a Crown Graphic 23. I have a 35mm f4.5 Rodenstock Apo Grandagon that I want to use, has anyone else has success/failure with this lens?

I have a "Baby Graphic" lensboard that came with a lens that I mounted to a 45 Crown. If you're interested post or e-mail me the exact lensboard dimensions and the *exact* hole size. I'm not a seller. Just a guy with an extra lensboard that I can't use.